Place the straight edge of a piece of paper along the points (A to B).
Starting from the first point (point A), mark the position where the edge of your piece of paper cuts each contour line and write the value of that countour line.
Draw the horizontal and vertical axes for your cross-section (the length for your cross-section should match the distance from A-B.
Place your paper along the horizontal axis and plot the contour points and heights according to the scale on the cross-section.
Join the dots with a single, smooth curved line to show the slope of the hill (relief).
Label any features that you have included in your cross-section such as rivers using a key.
Cross-Sections